Indic Positional Category - Top And Bottom And Left

Top And Bottom And Left is a value used to describe how certain consonant conjuncts or vowel signs attach to a base character in Indic scripts, specifically indicating that the mark appears simultaneously above, below, and to the left of the base glyph. This rare positioning occurs in complex ligatures where multiple diacritics combine, such as in some Tamil or Malayalam combinations, where a vowel sign wraps around the consonant in three directions at once. The value helps rendering engines correctly place these multi-part marks without overlapping or misaligning, ensuring the visual stack matches the intended phonetic order. It is distinct from simpler positions like top alone or bottom alone, and applies only to a handful of characters in the entire script system.